The model TPS54060DGQR is part of Texas Instruments (TI) product offerings. Specifically, it is a switching regulator (DC-DC converter) designed for high-efficiency voltage conversion.
Below is a comprehensive explanation of the pin functions, packaging details, and FAQs.
Packaging & Pinout Information:
Package Type: The TPS54060DGQR comes in a QFN (Quad Flat No-lead) package, with 20 pins. Pin Count: 20 pins in total.Pin Functionality Table (20 Pins):
Pin Number Pin Name Pin Type Function Description 1 VIN Input This is the input voltage pin. It Power s the regulator with the input DC voltage (typically 3.5V to 60V). 2 SW Output (Switch) This is the switch node pin, where the internal transistor connects to the external inductor. It provides the power conversion output and needs proper layout for efficiency. 3 PGND Ground This is the power ground pin and connects to the ground of the external circuit. Ensure good PCB layout to minimize noise. 4 EN Control This is the Enable pin. It controls whether the regulator is enabled or disabled. High voltage enables the regulator. 5 COMP Control This pin connects to the external compensation network to stabilize the feedback loop. Adjust this network for proper loop dynamics. 6 FB Feedback This pin is used for the feedback voltage. It connects to an external resistor divider to sense the output voltage and control regulation. 7 RT/CT Control Connect an external resistor and capacitor to set the switching frequency. This pin defines the internal oscillator frequency. 8 PGOOD Status Power Good pin is a logic output that signals whether the output voltage is within the acceptable range. 9 SS Control Soft-start pin used for limiting the inrush current at power-up. An external capacitor is typically connected here. 10 VOUT Output This is the output voltage pin, providing the regulated output voltage to the load. 11 VDD Power Supply This pin is for the internal regulator. It provides a stable voltage to the internal circuits of the device. 12 SENSE+ Feedback This is the positive input of the current-sensing differential pair. It is used for current-mode control and protection. 13 SENSE- Feedback This is the negative input of the current-sensing differential pair. It connects to the negative side of the inductor. 14 NC No Connection This pin is not internally connected to anything and can be left floating. 15 NC No Connection This pin is not connected internally, similar to Pin 14. 16 GND Ground This is the ground pin. It must be connected to the system ground. 17 NC No Connection This pin is also not internally connected. It is typically reserved for manufacturing purposes. 18 NC No Connection Another unconnected pin. It can be left floating. 19 VCC Power Supply This pin powers internal circuits for the TPS54060. Ensure proper decoupling for stable operation. 20 PGND Ground This is the power ground, which connects to the ground of the high-current power section of the regulator. It is different from Pin 16, which is signal ground.20 FAQs for TPS54060DGQR:
Q1: What is the recommended input voltage range for the TPS54060DGQR? A1: The recommended input voltage range for the TPS54060DGQR is between 3.5V and 60V.
Q2: How do I enable the TPS54060DGQR? A2: The TPS54060DGQR can be enabled by applying a high voltage (typically greater than 1.5V) to the EN (Pin 4) pin.
Q3: Can the TPS54060DGQR operate with only one capacitor for soft-start? A3: No, the soft-start (Pin 9) requires an external capacitor to function properly. It helps to limit inrush current during startup.
Q4: What is the maximum output voltage the TPS54060DGQR can regulate? A4: The TPS54060DGQR is designed to regulate output voltages up to 60V, depending on the input voltage and application requirements.
Q5: How do I adjust the switching frequency of the TPS54060DGQR? A5: The switching frequency can be adjusted by selecting appropriate resistor and capacitor values connected to the RT/CT (Pin 7) pin.
Q6: What is the function of the PGOOD pin? A6: The PGOOD pin (Pin 8) provides a logic-level output that signals when the output voltage is within the expected range, indicating proper regulation.
Q7: How should I connect the feedback pins for voltage regulation? A7: Connect a resistor divider network between the output voltage and the FB (Pin 6) to set the desired output voltage.
Q8: Can the TPS54060DGQR handle high load currents? A8: Yes, the TPS54060DGQR is capable of handling output currents up to 6A, depending on the thermal conditions and external components.
Q9: What is the function of the SW pin? A9: The SW pin (Pin 2) is the switch node that connects the internal MOSFET to the inductor for the power conversion process.
Q10: Is there a way to monitor the output current of the TPS54060DGQR? A10: Yes, you can use the current sensing pins, SENSE+ (Pin 12) and SENSE- (Pin 13), to monitor and control the current in the output path.
Q11: What is the role of the VDD pin? A11: The VDD pin (Pin 11) supplies the voltage needed to power the internal circuits of the TPS54060DGQR.
Q12: How do I protect the TPS54060DGQR from overheating? A12: The TPS54060DGQR features over-temperature protection to prevent damage. Additionally, ensure adequate PCB thermal design to support the heat dissipation.
Q13: Can I use a single ground plane for PGND and GND pins? A13: No, it is recommended to separate the signal ground (GND) and power ground (PGND) to minimize noise and improve performance.
Q14: How does the TPS54060DGQR manage startup currents? A14: The TPS54060DGQR incorporates a soft-start mechanism that controls the inrush current when the regulator is first powered on, to prevent system stress.
Q15: How do I calculate the output voltage using the feedback pins? A15: The output voltage can be calculated using a resistor divider between the output and the FB pin, with the ratio determined by the desired output voltage.
Q16: Is the TPS54060DGQR suitable for high-frequency applications? A16: Yes, the TPS54060DGQR is capable of operating at frequencies up to 1 MHz depending on external components and frequency selection.
Q17: Can I use a different package for the TPS54060DGQR? A17: The TPS54060DGQR is only available in the 20-pin QFN package. However, there are other TI regulators that may offer different packages.
Q18: What is the significance of the VCC pin? A18: The VCC pin (Pin 19) is used to supply the internal circuits of the TPS54060DGQR and needs to be properly decoupled for stable operation.
Q19: How does the TPS54060DGQR ensure stable regulation at varying loads? A19: The TPS54060DGQR uses current-mode control with feedback, ensuring stability under varying load conditions.
Q20: What are the common failure modes of the TPS54060DGQR? A20: Common failure modes include overheating, incorrect feedback resistor values leading to unstable regulation, and improper grounding leading to noise issues.
This provides the full pinout, functionality, and FAQ list for the TPS54060DGQR.